Publisher's Summary

From Holly Black and Cassandra Clare comes the third installment in the New York Times best-selling series that defies what you think you know about the worlds of good and evil.

Magic can save you. Magic can kill you.

It should be a time of celebration. The Enemy of Death is dead; a severed head proof of his downfall. The magical world has no reason to believe otherwise, and Callum, Tamara and Aaron are celebrated as heroes.

But at a party held in their honour, things go horribly, brutally wrong. A fellow student is callously murdered, and it seems Call’s worst fears are confirmed: there is a spy in the Magisterium. No one is safe.

Now, using the powerful magic they’ve been taught, the trio must risk their lives to track down the killer. But magic is dangerous - in the wrong hands it could bring terrible destruction. And reveal the deadliest secret of all....

What the Critics Say

"Moves deftly into the gap left by Harry Potter...gripping." (The Telegraph)

"This tightly plotted story shines with imaginative twists and settings, sparks of humor, and a rich portrayal of friendship in the face of doubt. The co-authors successfully probe the themes of good and evil even as they craft an entertainingly fast-paced read. Both a successful addition to the middle-grade magic school genre and a satisfying sequel." (Kirkus Reviews)